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8101103 |
Earbud and method of manufacture
An earbud (10) for carrying sound from a source (16) to a person's ear canal, includes a soft foam body (20) and a sleeve (26) of stiffer material lying within the body. The body is molded around...
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8015680 |
Pressing apparatus and method
A pressing apparatus is used to press a number of hooks of a speaker mesh to a shell. The pressing apparatus includes a workbench, a first pressing board located above the workbench, a number of...
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7481969 |
Powdered metal magnetic filter and method for manufacturing same
The present invention provides a fluid filter comprising a magnetic substrate configured to allow passage of fluid therethrough, with the substrate manufactured from sintered powdered metal....
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6915756 |
Bells
A bell is described having the first at least three or more frequencies substantially in harmonic sequence. A method for designing such a bell is also disclosed. An optimization procedure is...
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6606772 |
Method for manufacturing piezoelectric oscillator
A method is provided for fabricating a piezoelectric vibrator without degrading vibration characteristics. The piezoelectric vibrator has a vibration plate formed with a piezoelectric vibration...
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6098259 |
Apparatus for continuously producing jingling bells
An apparatus for continuously producing jingling bells includes an upper mold plate and a lower mold plate. The upper mold plate includes a number of punch pins for punching a material web into...
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5507082 |
Method of manufacturing an object lens holder
An object lens holder for holding an object lens for converging a laser light radiated from a laser light source on a signal recording surface of an optical recording medium includes a bobbin part...
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5485664 |
Method for producing globe-shaped bells with single piece shells
A method for manufacturing a bell continuously and automatically with a number of mold pieces which are movable downward toward a lower mold having a number of mold cavities for engaging with one...
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5297324 |
Fully rounded jingle bell making method
A fully rounded jingle bell making method including steps of (a) preparing a bell blank having four blades spaced by notches around a dome-like body portion; (b) secondarily punching the bell blank...
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5203560 |
Production of a sound-producing PU-ball
The production of a sound-producing polyurethane foamed ball is disclosed in which the sound producing hardware having a sound generating circuit connected to a battery set by a spring switch, is...
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4361952 |
Method of adjusting air gap of an electric horn
The invention pertains to an electric diaphragm horn and the method of air gap adjustment wherein the horn utilizes an electric coil mounted with a housing which includes a pole piece; a diaphragm...
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4328607 |
Manufacturing process for foil magnetic recording disks
A magnetic recording device employing a thin foil member is fabricated by radially compressing a ring member, securing the periphery of the foil member to the compressed ring, releasing the...
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4227482 |
Pressurized fluid-actuated sound-producing device, and method of assembling it
A sound-producing device, for use with a pressurized fluid container, includes a body having an orifice surrounded by an annular seat, a cap facing the seat, and a diaphragm held taut over the...
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4180008 |
Solderless bell and method of forming a solderless bell
A method of forming a solderless bell, having a single sound opening, out of a blank within a strip, is disclosed, which comprises the steps of: forming a crown within the blank; separating the...
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3903594 |
Method of making electrographic recording heads employing printed circuit techniques
Electrographic recording heads are fabricated using printed circuit techniques. A head with two parallel rows of recording electrode areas is constructed by forming two confronting rows of...
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3885286 |
STREAMER MANUFACTURE
A seismic streamer comprises a cable harness inside an oil filled sheath. The sheath is a flexible plastic tube. The harness includes a plurality of hydrophones and associated electrical...
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3851385 |
METHOD OF ADJUSTING THE FREQUENCY OF TRANSVERSE VIBRATORS HAVING A PLURALITY OF LEGS
A method of and device for equalizing the frequency and/or symmetry of frequency of transverse vibrators having a plurality of vibrator legs, especially of a two-legged flat fork vibrator serving...
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3786553 |
METHOD OF ASSEMBLING TRANSDUCER ACOUSTICALLY COUPLED BY SILICONE GREASE
A transducer which includes an element assembly which is acoustically coud to a boot by silicone grease, such as di-methyl polysiloxane oil and silicone oxide. A method of assembling the transducer...
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3776175 |
AUDIBLE FIRE ALARM AND METHOD OF MAKING THE SAME
An audible fire alarm and method of making the same. The apparatus is operative to provide one or more sharp reports signaling exposure of the alarm to a temperature exceeding a predetermined value...
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3683845 |
DOMES FOR ELECTRIC BELLS
A bell member for an electric bell, in which the thickness of the bell member varies from place to place in accord with the desired total characteristics of the bell. Variations in the vibrational...
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3352000 |
Method of assembly of resonator
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3230614 |
Method and apparatus for automatically tuning mechanical frequency sources
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2968863 |
Process of making piano string
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2845697 |
Method of manufacturing a longitudinal mode mechanical vibrator
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2785507 |
One-piece pneumatic sound maker with vibrating reed
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